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Use a standard implementation to check for type conversion.

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This commit is contained in:
Sandu Liviu Catalin 2018-07-29 14:35:51 +03:00
parent 0ad290ca34
commit 2dcd9ee986
1 changed files with 23 additions and 30 deletions
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53
include/sqrat/sqratTypes.h
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@ -46,27 +46,6 @@
namespace Sqrat {
/// @cond DEV
// copied from http://www.experts-exchange.com/Programming/Languages/CPP/A_223-Determing-if-a-C-type-is-convertable-to-another-at-compile-time.html
template <typename T1, typename T2>
struct is_convertible
{
private:
struct True_ { char x[2]; };
struct False_ { };
static True_ helper(T2 const &);
static False_ helper(...);
static T1* dummy;
public:
static bool const YES = (
sizeof(True_) == sizeof(is_convertible::helper(*dummy))
);
};
template <typename T, bool b>
struct popAsInt
{
@ -171,20 +150,20 @@ struct Var {
if (ptr != NULL) {
value = *ptr;
#if !defined (SCRAT_NO_ERROR_CHECKING)
} else if (is_convertible<T, SQInteger>::YES) { /* value is likely of integral type like enums */
} else if (std::is_convertible<T, SQInteger>::value) { /* value is likely of integral type like enums */
SQCLEAR(vm); // clear the previous error
value = popAsInt<T, is_convertible<T, SQInteger>::YES>(vm, idx).value;
value = popAsInt<T, std::is_convertible<T, SQInteger>::value>(vm, idx).value;
#endif
} else {
// initialize value to avoid warnings
value = popAsInt<T, is_convertible<T, SQInteger>::YES>(vm, idx).value;
value = popAsInt<T, std::is_convertible<T, SQInteger>::value>(vm, idx).value;
}
SQCATCH(vm) {
#if defined (SCRAT_USE_EXCEPTIONS)
SQUNUSED(e); // avoid "unreferenced local variable" warning
#endif
if (is_convertible<T, SQInteger>::YES) { /* value is likely of integral type like enums */
value = popAsInt<T, is_convertible<T, SQInteger>::YES>(vm, idx).value;
if (std::is_convertible<T, SQInteger>::value) { /* value is likely of integral type like enums */
value = popAsInt<T, std::is_convertible<T, SQInteger>::value>(vm, idx).value;
} else {
SQRETHROW(vm);
}
@ -202,7 +181,7 @@ struct Var {
if (ClassType<T>::hasClassData(vm))
ClassType<T>::PushInstanceCopy(vm, value);
else /* try integral type */
pushAsInt<T, is_convertible<T, SQInteger>::YES>().push(vm, value);
pushAsInt<T, std::is_convertible<T, SQInteger>::value>().push(vm, value);
}
private:
@ -258,7 +237,7 @@ struct Var<T&> {
if (ClassType<T>::hasClassData(vm))
ClassType<T>::PushInstance(vm, &value);
else /* try integral type */
pushAsInt<T, is_convertible<T, SQInteger>::YES>().push(vm, value);
pushAsInt<T, std::is_convertible<T, SQInteger>::value>().push(vm, value);
}
private:
@ -1092,7 +1071,6 @@ SCRAT_MAKE_NONREFERENCABLE(signed __int64)
SCRAT_MAKE_NONREFERENCABLE(std::string)
#endif
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Pushes a value on to a given VM's stack
///
@ -1112,7 +1090,6 @@ inline void PushVar(HSQUIRRELVM vm, T* value) {
Var<T*>::push(vm, value);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Pushes a value on to a given VM's stack
///
@ -1132,6 +1109,22 @@ inline void PushVar(HSQUIRRELVM vm, const T& value) {
Var<T>::push(vm, value);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Pushes a pack of values on to a given VM's stack
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T>
inline void PushVars(HSQUIRRELVM vm, T value) {
PushVar(vm, value);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Pushes a pack of values on to a given VM's stack
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class T, class... Ts>
inline void PushVars(HSQUIRRELVM vm, T value, Ts &&... tail) {
PushVar(vm, value);
PushVars(vm, std::forward<Ts>(tail)...);
}
/// @cond DEV
template<class T, bool b>